Yesterday at the Cove Brook Fun Day, Bobbie and I showed off pond dipped wildlife from the brook. One notable sighting was this nymph, which is rather on the large side for a damselfly larva. The three leaf-like caudal lamellae that emerge from it’s abdomen are used for respiration. They are also useful for identification, with the two paler bands on the outer lamellae making this a Banded Demoiselle (Calopteryx splendens).
The adults have iridescent blue or green bodies, with the males showing a distinctive ‘black thumb-print’ pattern on their wings. It’s great to find this nymph since both demoiselle species only breed in flowing water, so are rarely picked up in our pond dipping. Keep an eye out on the Cove Brook and River Blackwater.
Acting Senior Ranger Stuart